CN110545020A - Axial magnetic field double-rotor AC motor - Google Patents
Axial magnetic field double-rotor AC motor Download PDFInfo
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- CN110545020A CN110545020A CN201910906847.9A CN201910906847A CN110545020A CN 110545020 A CN110545020 A CN 110545020A CN 201910906847 A CN201910906847 A CN 201910906847A CN 110545020 A CN110545020 A CN 110545020A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
An axial magnetic field double-rotor alternating current motor relates to the field of motors. The invention aims to solve the problem that the traditional motor is not suitable for occasions requiring different rotating speeds of two rotors. The axial magnetic field double-rotor alternating current motor provided by the invention utilizes a motor stator to generate two magnetomotive forces with opposite rotation directions and different rotation speeds, and the two magnetomotive forces respectively interact with the magnetic fields of the two rotors to enable the two rotors to respectively rotate along different directions at different speeds, so that the purpose of being suitable for occasions with different rotation speeds of the two rotors is achieved. The invention can improve the efficiency and power density of the double-rotor motor, simplify the structure of the propulsion system, and has simple structure, low manufacturing cost and high reliability. The invention is suitable for a rotary propeller propulsion system, and is particularly suitable for being used as a heterodromous rotating double-mechanical-port permanent magnet synchronous motor for the propulsion of an underwater vehicle.
Description
Technical Field
The invention belongs to the field of motors.
background
The underwater vehicle propulsion system mainly adopts contra-rotating propellers, the structure can enable the two propellers to mutually offset the rotating torque generated in the circumferential direction while generating the forward driving force of the underwater vehicle, thereby effectively avoiding the roll phenomenon of the underwater vehicle, ensuring the forward attitude of the vehicle, improving the running efficiency of the system, and the driving mode adopts 'conventional motor + planetary gear', but the planetary gear structure enables the reliability and efficiency of the whole system to be lower.
a conventional dual-rotor permanent magnet motor is an alternating current motor composed of an inner rotor, an outer rotor, and an intermediate common stator, and its basic structure and a schematic cross-sectional view under a pair of poles are shown in fig. 8 and 9. The middle stator of the motor is fixed through a stator fastener, and the inner rotor and the outer rotor adopt different positioning modes according to the rotation in the same direction and the rotation in different directions. The counter-rotating double-rotor permanent magnet motor runs in a contra-rotating propeller propulsion system of an underwater vehicle, the structure of the propulsion system can be simplified, the size is reduced, the weight and the cost are reduced, an electric brush slip ring is not arranged, and the running is safer and more reliable. However, the motor has the defects of asymmetric inner and outer rotor structures, difficult electromagnetic design, unbalanced double-rotor torque output, difficult heat dissipation of the inner and outer rotors and the stator and the like, so that the motor is not suitable for being used in closed environments of underwater vehicles and the like, and is also not suitable for occasions requiring different rotating speeds of the two rotors.
disclosure of Invention
the invention provides an axial magnetic field double-rotor alternating current motor, aiming at solving the problem that the traditional motor is not suitable for occasions requiring different rotating speeds of two rotors.
the axial magnetic field double-rotor alternating current motor comprises six structures:
an axial magnetic field double-rotor alternating current motor with a first structure comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, an annular coil is wound in the two opposite radial through grooves, two effective edges of the coil are respectively embedded in the two radial through grooves, the coils are connected to form m symmetrical stator windings,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(2mkq+1)P
P＝(2mkq-1)P
The stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝2mqP
in the formula, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
the axial magnetic field double-rotor alternating current motor with the second structure comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of a circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, Q is a multiple of 4, 4 continuous radial through grooves form a groove group, the radial through grooves in each groove group are not shared with each other, an annular coil is wound in each groove group, two effective edges of the coil are respectively embedded into the two radial through grooves which are positioned on the outermost side in the groove group, the central lines of the coils corresponding to the two side surfaces have a difference of 360 electrical angles along the circumferential direction and are connected in series with the coils corresponding to each other, and the coils on each side surface form a set of three-phase stator winding,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(6kq+1)P
P＝(6kq-1)P
The stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝6qP
In the formula, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
the axial magnetic field double-rotor alternating current motor with the third structure comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of a circular ring, the radial through grooves on the two side surfaces are opposite to each other, Q is a multiple of 4, 4 continuous radial through grooves form a groove group, the 1 st and 2 th radial through grooves in each groove group are respectively overlapped with the 3 rd and 4 th radial through grooves in the adjacent previous groove group, each groove group is wound with an annular coil, two effective edges of the coil are respectively embedded into the two radial through grooves positioned on the outermost side in the groove group, the coils on the two side surfaces corresponding to each other are in mirror symmetry and are connected in series with the coils on the corresponding side surfaces, and the coils on each side surface form a set of integral-groove single-layer integral-pitch windings,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(2mkq+1)P
P＝(2mkq-1)P
The stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝2mqP
in the formula, m is the number of phases of the stator winding, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
The axial magnetic field double-rotor alternating current motor with the fourth structure comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, a stator winding with m-phase fractional slot symmetry is wound on a ring of the stator core, coils of the stator winding are uniformly distributed along the ring of the stator core,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
or
if the number of effective sides of coils in the stator winding arranged on each side surface of the stator core is Q, Q satisfies the following relation:
Q＝nkm
In the above formula, n and k are both positive integers.
an axial magnetic field double-rotor alternating current motor with a fifth structure comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with a set of fractional slot double-layer stator windings, the stator windings on the two side surfaces are arranged in a mirror symmetry manner, and coils of corresponding phases in the stator windings are connected in series,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
or
if the number of effective sides of coils in the stator winding arranged on each side surface of the stator core is 2Q, Q satisfies the following relation:
Q＝nkm
in the above formula, m is the number of phases of the stator winding, and n and k are positive integers.
an axial magnetic field double-rotor alternating current motor with a sixth structure comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring, the radial through grooves on the two side surfaces are opposite to each other, a set of fractional-groove single-layer stator winding is embedded in the radial through groove on each side surface, the stator windings on the two side surfaces are arranged in a mirror symmetry mode or in a staggered mode, and the coils of the corresponding phases are connected in series,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
or
Q satisfies the following relationship:
Q＝nkm
In the above formula, m is the number of phases of the stator winding, and n and k are positive integers.
in the axial magnetic field dual-rotor alternating current motor with the fourth structure, the two side faces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring, the radial through grooves on the two side faces are opposite to each other one by one, the two opposite radial through grooves are wound with an annular coil together, two effective edges of the coil are respectively embedded into the two radial through grooves, and all the coils on each side face form a set of stator winding.
In the axial magnetic field dual-rotor alternating current motor with the fifth structure, the two side faces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of the ring, the radial through grooves on the two side faces are opposite to each other, a tooth is arranged between every two adjacent radial through grooves, each tooth is wound with a coil, an effective edge of each radial through groove is embedded with two coils, and all the coils on each side face form a set of stator winding.
in the axial magnetic field dual-rotor ac motor with the sixth structure, a tooth is arranged between two adjacent radial through grooves, a coil is wound on every other tooth, so that an effective edge of the coil is embedded in one radial through groove, and all coils on each side face form a set of stator winding.
The axial magnetic field double-rotor alternating current motor with the six structures has a structure that the rotor is a surface-mounted permanent magnet, an embedded permanent magnet or a Halbach permanent magnet array.
the axial magnetic field double-rotor alternating current motor provided by the invention utilizes a motor stator to generate two magnetomotive forces with opposite rotation directions and different rotation speeds, and the two magnetomotive forces respectively interact with the magnetic fields of the two rotors to enable the two rotors to respectively rotate along different directions at different speeds, so that the purpose of being suitable for occasions with different rotation speeds of the two rotors is achieved.
The invention can improve the efficiency and power density of the double-rotor motor, simplify the structure of the propulsion system, and has simple structure, low manufacturing cost and high reliability.
the invention is suitable for a rotary propeller propulsion system, and is particularly suitable for being used as a heterodromous rotating double-mechanical-port permanent magnet synchronous motor for the propulsion of an underwater vehicle.
Drawings
fig. 1 is a schematic structural diagram of an axial-magnetic-field dual-rotor alternating-current motor and a stator thereof according to embodiments one and five, wherein (a) the motor and (b) the stator are arranged in parallel;
fig. 2 is a schematic structural diagram of an axial-magnetic-field dual-rotor ac motor and a stator thereof according to a second embodiment, (a) the motor, (b) the stator;
Fig. 3 is a schematic structural diagram of an axial-magnetic-field dual-rotor ac motor and a stator thereof according to a third embodiment, (a) the motor, (b) the stator;
Fig. 4 is a schematic structural diagram of an axial-magnetic-field dual-rotor ac motor and a stator thereof according to a sixth embodiment, (a) the motor, (b) the stator;
Fig. 5 is a schematic structural diagram of an axial-magnetic-field dual-rotor ac motor and a stator thereof according to a seventh embodiment, (a) the motor, (b) the stator;
Fig. 6 is a schematic structural diagram of an axial-magnetic-field dual-rotor ac motor and a stator thereof according to an eighth embodiment, (a) the motor, (b) the stator;
Fig. 7 is a schematic structural diagram of two rotors in an axial-field dual-rotor ac motor according to embodiments one to eight;
fig. 8 is a schematic axial cross-sectional view of a counter-rotating dual-rotor permanent magnet motor of the prior art;
fig. 9 is a schematic cross-sectional view of a counter-rotating dual-rotor permanent magnet motor of the prior art under a pair of poles.
Detailed Description
the first embodiment is as follows: referring to fig. 1 and fig. 7 to explain the embodiment specifically, the axial magnetic field dual-rotor ac motor according to the embodiment includes two rotors and a stator, the two rotors and the stator are coaxially disposed, the stator is located between the two rotors, an air gap is left between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, an annular coil is wound in the two opposite radial through grooves, two effective edges of the coil are respectively embedded in the two radial through grooves, the coils are connected to form m symmetrical stator windings,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(2mkq+1)P
P＝(2mkq-1)P
the stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝2mqP
in the formula, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
the second embodiment is as follows: referring to fig. 2 and fig. 7, the axial magnetic field double-rotor ac motor according to the present embodiment includes two rotors and a stator, the two rotors and the stator are coaxially disposed, the stator is located between the two rotors, an air gap is left between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of a circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, Q is a multiple of 4, 4 continuous radial through grooves form a groove group, the radial through grooves in each groove group are not shared with each other, an annular coil is wound in each groove group, two effective edges of the coil are respectively embedded into the two radial through grooves which are positioned on the outermost side in the groove group, the central lines of the coils corresponding to the two side surfaces have a difference of 360 electrical angles along the circumferential direction and are connected in series with the coils corresponding to each other, and the coils on each side surface form a set of three-phase stator winding,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(6kq+1)P
P＝(6kq-1)P
the stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝6qP
in the formula, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
the third concrete implementation mode: specifically describing the present embodiment with reference to fig. 3 and 7, the axial magnetic field dual-rotor ac motor according to the present embodiment includes two rotors and a stator, the two rotors and the stator are coaxially disposed, the stator is located between the two rotors, an air gap is left between the stator and the two rotors,
The rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of a circular ring, the radial through grooves on the two side surfaces are opposite to each other, Q is a multiple of 4, 4 continuous radial through grooves form a groove group, the 4 radial through grooves are sequentially numbered as 1, 2, 3 and 4, the 1 st and 2 th radial through grooves in each groove group are respectively overlapped with the 3 rd and 4 th radial through grooves in the adjacent previous groove group, each groove group is wound with an annular coil, two effective edges of the coil are respectively embedded into the two radial through grooves which are positioned at the outermost side in the groove group, the coils at the two side surfaces corresponding to each other are in mirror symmetry and are connected in series between the coils corresponding to each other, and the coil at each side surface forms a set of integral groove single-layer integral distance winding,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(2mkq+1)P
P＝(2mkq-1)P
The stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝2mqP
in the formula, m is the number of phases of the stator winding, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
The fourth concrete implementation mode: the axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, a stator winding with m-phase fractional slot symmetry is wound on a ring of the stator core, coils of the stator winding are uniformly distributed along the ring of the stator core,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
Or
If the number of effective sides of coils in the stator winding arranged on each side surface of the stator core is Q, Q satisfies the following relation:
Q＝nkm
In the above formula, n and k are both positive integers.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
The fifth concrete implementation mode: specifically describing the present embodiment with reference to fig. 1 and 7, the difference between the axial-field double-rotor ac motor according to the present embodiment and the axial-field double-rotor ac motor according to the first embodiment is that, in the present embodiment, the permanent magnet pole pair numbers P1 and P2 of the two rotors satisfy the following relationships, respectively:
or
q satisfies the following relationship:
Q＝nkm
in the above formula, n and k are both positive integers.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
the sixth specific implementation mode: specifically describing the present embodiment with reference to fig. 4 and 7, the axial magnetic field dual-rotor ac motor according to the present embodiment includes two rotors and a stator, the two rotors and the stator are coaxially disposed, the stator is located between the two rotors, an air gap is left between the stator and the two rotors,
The rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with a set of fractional slot double-layer stator windings, the stator windings on the two side surfaces are arranged in a mirror symmetry manner, and coils of corresponding phases in the stator windings are connected in series,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
or
If the number of effective sides of coils in the stator winding arranged on each side surface of the stator core is 2Q, Q satisfies the following relation:
Q＝nkm
in the above formula, m is the number of phases of the stator winding, and n and k are positive integers.
Specifically, Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring are formed in the two side faces of the stator core respectively, the radial through grooves in the two side faces are opposite to each other one by one, a tooth is arranged between every two adjacent radial through grooves, a coil is wound on each tooth, an effective edge of two coils is embedded in each radial through groove, and all the coils on each side face form a set of stator winding.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
The seventh embodiment: specifically describing the present embodiment with reference to fig. 5 and 7, the axial magnetic field dual-rotor ac motor according to the present embodiment includes two rotors and a stator, the two rotors and the stator are coaxially disposed, the stator is located between the two rotors, an air gap is left between the stator and the two rotors,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, a set of fractional-groove single-layer stator winding is embedded in the radial through groove on each side surface, the stator windings on the two side surfaces are arranged in a mirror symmetry manner and are connected in series between corresponding coils,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
or
Q satisfies the following relationship:
Q＝nkm
In the above formula, m is the number of phases of the stator winding, and n and k are positive integers.
Furthermore, a tooth is arranged between two adjacent radial through grooves, a coil is wound on every other tooth, so that an effective edge of the coil is embedded in one radial through groove, and all coils on each side face form a set of stator winding.
the axial-field dual-rotor alternating current motor of the embodiment has a single electric power input port (i.e., a set of windings) and two independent mechanical power output ports (two rotors). The two rotors are provided with 10 permanent magnets, the other rotor is provided with 14 permanent magnets, and the number of pole pairs of the two rotors is different, so that the two rotors can rotate in different speeds and different directions only by introducing a group of three-phase symmetrical alternating current into a stator winding of the motor. Therefore, in practical application, the two rotors are respectively coaxially connected with respective loads, the rotating speeds of the two rotors are different, and the rotating directions of the two rotors are opposite, so that the purpose of outputting two mechanical quantities with different speeds and different directions can be achieved.
the specific implementation mode is eight: the present embodiment will be described specifically with reference to fig. 6 and 7, and the axial-field double-rotor ac motor according to the present embodiment differs from the axial-field double-rotor ac motor according to the seventh embodiment in that stator windings on both side surfaces are alternately provided in the present embodiment.
in the axial-magnetic-field dual-rotor ac motor according to the first to eighth embodiments, the rotor has a structure of a surface-mounted permanent magnet, an embedded permanent magnet, or a Halbach permanent magnet array.
Claims (10)
1. An axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
it is characterized in that the preparation method is characterized in that,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, an annular coil is wound in the two opposite radial through grooves, two effective edges of the coil are respectively embedded in the two radial through grooves, the coils are connected to form m symmetrical stator windings,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(2mkq+1)P
P＝(2mkq-1)P
the stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝2mqP
in the formula, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
2. An axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
it is characterized in that the preparation method is characterized in that,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, Q radial through grooves which are uniformly distributed along the circumferential direction of a circular ring are respectively arranged on two side surfaces of the stator core, the radial through grooves on the two side surfaces are opposite to each other, Q is a multiple of 4, 4 continuous radial through grooves form a groove group, the radial through grooves in each groove group are not shared with each other, an annular coil is wound in each groove group, two effective edges of the coil are respectively embedded into the two radial through grooves which are positioned on the outermost side in the groove group, the central lines of the coils corresponding to the two side surfaces have a difference of 360 electrical angles along the circumferential direction and are connected in series with the coils corresponding to each other, and the coils on each side surface form a set of three-phase stator winding,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(6kq+1)P
P＝(6kq-1)P
The stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝6qP
in the formula, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
3. an axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
it is characterized in that the preparation method is characterized in that,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
The stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of a circular ring, the radial through grooves on the two side surfaces are opposite to each other, Q is a multiple of 4, 4 continuous radial through grooves form a groove group, the 1 st and 2 th radial through grooves in each groove group are respectively overlapped with the 3 rd and 4 th radial through grooves in the adjacent previous groove group, each groove group is wound with an annular coil, two effective edges of the coil are respectively embedded into the two radial through grooves positioned on the outermost side in the groove group, the coils on the two side surfaces corresponding to each other are in mirror symmetry and are connected in series with the coils on the corresponding side surfaces, and the coils on each side surface form a set of integral-groove single-layer integral-pitch windings,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
P＝(2mkq+1)P
P＝(2mkq-1)P
the stator winding fundamental wave magnetomotive force pole pair number P and Q satisfies the following relation:
Q＝2mqP
in the formula, m is the number of phases of the stator winding, q is the number of slots of each phase corresponding to the fundamental magnetomotive force of the stator winding of each pole, and k is a positive integer.
4. an axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
it is characterized in that the preparation method is characterized in that,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, a stator winding with m-phase fractional slot symmetry is wound on a ring of the stator core, coils of the stator winding are uniformly distributed along the ring of the stator core,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
Or
if the number of effective sides of coils in the stator winding arranged on each side surface of the stator core is Q, Q satisfies the following relation:
Q＝nkm
In the above formula, n and k are both positive integers.
5. an axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
it is characterized in that the preparation method is characterized in that,
The rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with a set of fractional slot double-layer stator windings, the stator windings on the two side surfaces are arranged in a mirror symmetry manner, and coils of corresponding phases in the stator windings are connected in series,
The permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
Or
if the number of effective sides of coils in the stator winding arranged on each side surface of the stator core is 2Q, Q satisfies the following relation:
Q＝nkm
in the above formula, m is the number of phases of the stator winding, and n and k are positive integers.
6. An axial magnetic field double-rotor alternating current motor comprises two rotors and a stator, wherein the two rotors and the stator are coaxially arranged, the stator is positioned between the two rotors, air gaps are reserved between the stator and the two rotors,
it is characterized in that the preparation method is characterized in that,
the rotor comprises a metal base disc and a plurality of permanent magnets, the surfaces of the permanent magnets are fan-shaped or trapezoid, the permanent magnets are uniformly distributed and fixed on the surface of the metal base disc along a ring shape, the narrow sides of the permanent magnets face the circle center of the metal base disc, the magnetizing direction of the permanent magnets is axial, the magnetic poles of two adjacent permanent magnets are opposite in direction,
the stator comprises a circular stator core, two side surfaces of the stator core are respectively provided with Q radial through grooves which are uniformly distributed along the circumferential direction of the circular ring, the radial through grooves on the two side surfaces are opposite to each other, a set of fractional-groove single-layer stator winding is embedded in the radial through groove on each side surface, the stator windings on the two side surfaces are arranged in a mirror symmetry mode or in a staggered mode, and the coils of the corresponding phases are connected in series,
the permanent magnet pole pair numbers P1 and P2 of the two rotors respectively satisfy the following relations:
Or
q satisfies the following relationship:
Q＝nkm
in the above formula, m is the number of phases of the stator winding, and n and k are positive integers.
7. the axial-magnetic-field dual-rotor alternating-current motor as claimed in claim 4, wherein Q radial through grooves evenly distributed along the circumferential direction of the circular ring are formed in each of two side faces of the stator core, the radial through grooves in the two side faces are opposite to each other, an annular coil is wound in each of the two opposite radial through grooves, two effective edges of the coil are embedded in the two radial through grooves, and all the coils in each side face form a set of stator winding.
8. the axial-magnetic-field dual-rotor alternating-current motor as claimed in claim 5, wherein Q radial through grooves are formed in each of two side faces of the stator core, the radial through grooves are evenly arranged along the circumferential direction of the ring, the radial through grooves are arranged on the two side faces in a one-to-one opposite mode, a tooth is arranged between every two adjacent radial through grooves, a coil is wound on each tooth, the effective edge of each radial through groove is embedded with two coils, and all the coils on each side face form a set of stator winding.
9. the axial field double rotor ac machine of claim 6, wherein a tooth is located between two adjacent radial slots, and a coil is wound around every other tooth such that a coil active edge is embedded in a radial slot, and all coils on each side form a set of stator windings.
10. the axial-magnetic-field double-rotor alternating-current motor according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the rotor is of a surface-mounted permanent magnet, an embedded permanent magnet or a Halbach permanent magnet array structure.
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| CN201910906847.9A CN110545020B (en) | 2019-09-24 | 2019-09-24 | Axial magnetic field double-rotor AC motor |
| CN202010687914.5A CN111817521B (en) | 2019-09-24 | 2019-09-24 | Axial magnetic field double-rotor AC motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111934508A (en) * | 2020-08-11 | 2020-11-13 | 哈尔滨工业大学 | Radial magnetic field coreless permanent magnet synchronous motor |
| CN112366867A (en) * | 2020-10-30 | 2021-02-12 | 北京理工大学 | Double-counter-speed axial flux permanent magnet motor based on PCB |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075043A (en) * | 2011-01-23 | 2011-05-25 | 浙江大学 | Multi-phase annular winding birotor disc type induction motors |
| CN107591980A (en) * | 2016-07-08 | 2018-01-16 | 艾默生电气公司 | Stator and coil for axial-flux electric machine |
| CN108390529A (en) * | 2018-03-21 | 2018-08-10 | 哈尔滨工业大学 | Double-stator permanent magnet synchronous motor |
| US20180278186A1 (en) * | 2017-03-24 | 2018-09-27 | David Morse | Axial flux motor with built-in optical encoder |
| CN109462318A (en) * | 2018-11-06 | 2019-03-12 | 东南大学 | A kind of magnet structure axial stator iron-core less motor |
| CN109951036A (en) * | 2019-02-21 | 2019-06-28 | 郑州大学 | A kind of constant two-rotor axial magnetic flux Circular Winding magneto of rotating ratio |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728697B (en) * | 2019-01-31 | 2020-05-19 | 南京工程学院 | Design method for multi-frequency antipodal magnetic field coupling direct-drive double-fed motor structure pole slot |
| CN109660098A (en) * | 2019-02-28 | 2019-04-19 | 郑州大学 | A kind of covert two-rotor axial magnetic flux Circular Winding synchronous motor of pole-changing |
-
2019
- 2019-09-24 CN CN202010687914.5A patent/CN111817521B/en active Active
- 2019-09-24 CN CN201910906847.9A patent/CN110545020B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075043A (en) * | 2011-01-23 | 2011-05-25 | 浙江大学 | Multi-phase annular winding birotor disc type induction motors |
| CN107591980A (en) * | 2016-07-08 | 2018-01-16 | 艾默生电气公司 | Stator and coil for axial-flux electric machine |
| US20180278186A1 (en) * | 2017-03-24 | 2018-09-27 | David Morse | Axial flux motor with built-in optical encoder |
| CN108390529A (en) * | 2018-03-21 | 2018-08-10 | 哈尔滨工业大学 | Double-stator permanent magnet synchronous motor |
| CN109462318A (en) * | 2018-11-06 | 2019-03-12 | 东南大学 | A kind of magnet structure axial stator iron-core less motor |
| CN109951036A (en) * | 2019-02-21 | 2019-06-28 | 郑州大学 | A kind of constant two-rotor axial magnetic flux Circular Winding magneto of rotating ratio |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111934508A (en) * | 2020-08-11 | 2020-11-13 | 哈尔滨工业大学 | Radial magnetic field coreless permanent magnet synchronous motor |
| CN111934508B (en) * | 2020-08-11 | 2022-11-29 | 哈尔滨工业大学 | Radial magnetic field coreless permanent magnet synchronous motor |
| CN112366867A (en) * | 2020-10-30 | 2021-02-12 | 北京理工大学 | Double-counter-speed axial flux permanent magnet motor based on PCB |
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| CN111817521A (en) | 2020-10-23 |
| CN110545020B (en) | 2021-11-19 |
| CN111817521B (en) | 2022-11-08 |
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